391040

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1$

素因数の和:79

約数の個数: 64

約数和(自身を含む): 1028160

約数和(自身を除く): 637120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 47, 52, 64, 65, 80, 94, 104, 128, 130, 160, 188, 208, 235, 260, 320, 376, 416, 470, 520, 611, 640, 752, 832, 940, 1040, 1222, 1504, 1664, 1880, 2080, 2444, 3008, 3055, 3760, 4160, 4888, 6016, 6110, 7520, 8320, 9776, 12220, 15040, 19552, 24440, 30080, 39104, 48880, 78208, 97760, 195520, 391040]

約数ペア:

[(1, 391040), (2, 195520), (4, 97760), (5, 78208), (8, 48880), (10, 39104), (13, 30080), (16, 24440), (20, 19552), (26, 15040), (32, 12220), (40, 9776), (47, 8320), (52, 7520), (64, 6110), (65, 6016), (80, 4888), (94, 4160), (104, 3760), (128, 3055), (130, 3008), (160, 2444), (188, 2080), (208, 1880), (235, 1664), (260, 1504), (320, 1222), (376, 1040), (416, 940), (470, 832), (520, 752), (611, 640)]